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<title>ComputedColumn Structure</title>
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<h1>ComputedColumn</h1>

<p>A user-defined column in the result set.</p>

<h3>Description</h3>

<p>A computed column is a user-defined column produced as an 
expression of other columns within the data set. It is not one of the columns 
retrieved directly from the underlying data provider.</p>

<h3>See Also</h3>

<h2 class="property">name</h2>

<p>The name of the computed column.</p>

<h3>Description</h3>

<p>The name of the computed column and is required. The name 
must be unique within the result set.</p>

<h3>See Also</h3>
<p>The Result Column Names section for 
the naming rules.</p>

<h2 class="property">dataType</h2>
<p>Column data type property.</p>

<h3>Description</h3>
<p>Column data type property.</p>

<h2 class="property">expression</h2>

<p>The BIRT expression that defines the value of the computed column.</p>

<h3>Description</h3>

<p>The expression that gets evaluated and its resulting 
value assigned to the computed column.</p>

<h3>See Also</h3>
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